CA2135568C - Combined installation for the production of metal and the separation of gas from air - Google Patents
Combined installation for the production of metal and the separation of gas from air Download PDFInfo
- Publication number
- CA2135568C CA2135568C CA002135568A CA2135568A CA2135568C CA 2135568 C CA2135568 C CA 2135568C CA 002135568 A CA002135568 A CA 002135568A CA 2135568 A CA2135568 A CA 2135568A CA 2135568 C CA2135568 C CA 2135568C
- Authority
- CA
- Canada
- Prior art keywords
- air
- gas
- unit
- metal
- supply
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B5/00—Making pig-iron in the blast furnace
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D46/00—Controlling, supervising, not restricted to casting covered by a single main group, e.g. for safety reasons
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/072—Treatment with gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04012—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling
- F25J3/04018—Providing pressurised feed air or process streams within or from the air fractionation unit by compression of warm gaseous streams; details of intake or interstage cooling of main feed air
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04078—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression
- F25J3/0409—Providing pressurised feed air or process streams within or from the air fractionation unit providing pressurized products by liquid compression and vaporisation with cold recovery, i.e. so-called internal compression of oxygen
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04006—Providing pressurised feed air or process streams within or from the air fractionation unit
- F25J3/04109—Arrangements of compressors and /or their drivers
- F25J3/04115—Arrangements of compressors and /or their drivers characterised by the type of prime driver, e.g. hot gas expander
- F25J3/04121—Steam turbine as the prime mechanical driver
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04157—Afterstage cooling and so-called "pre-cooling" of the feed air upstream the air purification unit and main heat exchange line
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04151—Purification and (pre-)cooling of the feed air; recuperative heat-exchange with product streams
- F25J3/04163—Hot end purification of the feed air
- F25J3/04169—Hot end purification of the feed air by adsorption of the impurities
- F25J3/04181—Regenerating the adsorbents
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04248—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion
- F25J3/04284—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams
- F25J3/0429—Generation of cold for compensating heat leaks or liquid production, e.g. by Joule-Thompson expansion using internal refrigeration by open-loop gas work expansion, e.g. of intermediate or oxygen enriched (waste-)streams of feed air, e.g. used as waste or product air or expanded into an auxiliary column
- F25J3/04296—Claude expansion, i.e. expanded into the main or high pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04406—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system
- F25J3/04412—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air using a dual pressure main column system in a classical double column flowsheet, i.e. with thermal coupling by a main reboiler-condenser in the bottom of low pressure respectively top of high pressure column
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04527—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general
- F25J3/04551—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production
- F25J3/04557—Integration with an oxygen consuming unit, e.g. glass facility, waste incineration or oxygen based processes in general for the metal production for pig iron or steel making, e.g. blast furnace, Corex
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04563—Integration with a nitrogen consuming unit, e.g. for purging, inerting, cooling or heating
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04593—The air gas consuming unit is also fed by an air stream
- F25J3/046—Completely integrated air feed compression, i.e. common MAC
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04521—Coupling of the air fractionation unit to an air gas-consuming unit, so-called integrated processes
- F25J3/04612—Heat exchange integration with process streams, e.g. from the air gas consuming unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J3/00—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification
- F25J3/02—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream
- F25J3/04—Processes or apparatus for separating the constituents of gaseous or liquefied gaseous mixtures involving the use of liquefaction or solidification by rectification, i.e. by continuous interchange of heat and material between a vapour stream and a liquid stream for air
- F25J3/04763—Start-up or control of the process; Details of the apparatus used
- F25J3/04866—Construction and layout of air fractionation equipments, e.g. valves, machines
- F25J3/04951—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network
- F25J3/04957—Arrangements of multiple air fractionation units or multiple equipments fulfilling the same process step, e.g. multiple trains in a network and inter-connecting equipments upstream of the fractionation unit (s), i.e. at the "front-end"
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/004—Systems for reclaiming waste heat
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/02—Processes or apparatus using other separation and/or other processing means using simple phase separation in a vessel or drum
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/30—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes
- F25J2205/34—Processes or apparatus using other separation and/or other processing means using a washing, e.g. "scrubbing" or bubble column for purification purposes as evaporative cooling tower to produce chilled water, e.g. evaporative water chiller [EWC]
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- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
- F25J2205/66—Regenerating the adsorption vessel, e.g. kind of reactivation gas
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2205/00—Processes or apparatus using other separation and/or other processing means
- F25J2205/60—Processes or apparatus using other separation and/or other processing means using adsorption on solid adsorbents, e.g. by temperature-swing adsorption [TSA] at the hot or cold end
- F25J2205/66—Regenerating the adsorption vessel, e.g. kind of reactivation gas
- F25J2205/70—Heating the adsorption vessel
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- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2215/00—Processes characterised by the type or other details of the product stream
- F25J2215/40—Air or oxygen enriched air, i.e. generally less than 30mol% of O2
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- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/24—Multiple compressors or compressor stages in parallel
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- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2230/00—Processes or apparatus involving steps for increasing the pressure of gaseous process streams
- F25J2230/40—Processes or apparatus involving steps for increasing the pressure of gaseous process streams the fluid being air
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- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2240/00—Processes or apparatus involving steps for expanding of process streams
- F25J2240/70—Steam turbine, e.g. used in a Rankine cycle
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F25—REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION SOLIDIFICATION OF GASES
- F25J—LIQUEFACTION, SOLIDIFICATION OR SEPARATION OF GASES OR GASEOUS OR LIQUEFIED GASEOUS MIXTURES BY PRESSURE AND COLD TREATMENT OR BY BRINGING THEM INTO THE SUPERCRITICAL STATE
- F25J2270/00—Refrigeration techniques used
- F25J2270/90—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration
- F25J2270/906—External refrigeration, e.g. conventional closed-loop mechanical refrigeration unit using Freon or NH3, unspecified external refrigeration by heat driven absorption chillers
Abstract
L'installation combinée comprend au moins une unité de production de métal comprenant au moins un, typiquement une série de dispositifs de production ou de traitement de métal, et au moins une unité de séparation de gaz de l'air comprenant au moins une sortie d'au moins un gaz de l'air, les unités étant alimentées en air comprimé à faible teneur en vapeur d'eau par une unité commune de production d'air comprimé, au moins une des sorties de gaz de l'unité de séparation étant reliée à au moins un des dispositifs de l'unité de production pour l'alimentation en gaz de ce dernier.The combined plant comprises at least one metal production unit comprising at least one, typically a series of metal production or processing devices, and at least one air gas separation unit comprising at least one outlet of at least one air gas, the units being supplied with compressed air with low water vapor content by a common unit for producing compressed air, at least one of the gas outlets of the separation unit being connected to at least one of the devices of the production unit for supplying gas to the latter.
Description
~~3556~
Installation combinée d'une unité de production de métal st d'une unité de séparation de gaz de l'air.
La présente invention concerne une installation combinée d'au moins une unité de production d'au moins un métal, comprenant au moins un dispositif de production ou de traitement de métal, et d'au moins une unité de séparation de gaz de l'air comprenant au moins une sortie d'au moins un gaz de l'air.
Les unités de production de métaux, en particulier d'aciers, intègrent actuellement plusieurs dispositifs de production ou de traitement de métal pour, éventuellement, les regrouper en une ligne complète de production depuis le traitement du minerai brut jusqu'à l'obtention de produits finis, prêts à la commercialisation. La plupart de ces dispositifs de production ou de traitement de métal sont grands consommateurs d'air comprimé (plus de 100 Nm3 d'air par tonne de métal) et/ou de gaz de l'air, notamment !'oxygène, (plus de 50 Nm3 par tonne de métal) etlou un gaz neutre (plus de 10 Nm3 par tonne de métal). Ces gaz de l'air sont généralement fournis à partir de conteneurs de gaz liquéfié ou par des canalisations de gaz. Ces gaz de I°air sont par ailleurs élaborés par des unités de séparation de gaz de l'air, notamment de type cryogénique, alimentées également en air sous pression. Les compresseurs d'air, que ce soit pour les dispositifs de production ou de traitement de métal ou pour les unités de séparation de gaz de l'air, sont des équipements particulièrement onéreux et consommateurs d'énergie électrique, et grèvent de ce fait notablement les coüts de production de ces unités.
La présente invention a pour objet de proposer une installation combinée d'au moins une unité de production de métal et d'au moins une unité de séparation de gaz de l'air optimisant les synergies entre ces unités, notamment par la mise en commun d'une unité de production d'air comprimé
et par le couplage direct, sur site, des dispositifs de production ou de traitement de métal avec les sources de gaz de l'air offertes par l'unité de séparation de gaz de l'air.
Pour ce faire, selon une caractéristique de l'invention, l'installation combinée comprend une unité de production d'air comprimé ayant au moins une sortie reliée à l'unité de séparation de gaz de l'air et audit dispositif de production ou de traitement pour l'alimentation en air de ces derniers.
~;13~56~ 3556 ~~ ~
Combined installation of a metal production unit and a unit of gas separation from the air.
The present invention relates to a combined installation of minus one unit producing at least one metal, comprising at least a device for producing or treating metal, and at least one air gas separation unit comprising at least one outlet of at least less a gas from the air.
Metal production units, in particular steels, currently incorporate several production or processing devices of metal to eventually group them into a complete line of production from raw ore processing until finished products, ready for sale. Most of these devices production or metal processing are large consumers of air compressed (more than 100 Nm3 of air per ton of metal) and / or air gases, oxygen, (more than 50 Nm3 per tonne of metal) and / or gas neutral (more than 10 Nm3 per tonne of metal). These air gases are generally supplied from containers of liquefied gas or by gas pipelines. These gases of I ° air are moreover elaborated by of the units for separating air gases, in particular of the cryogenic type, also supplied with pressurized air. Air compressors, that this for metal production or processing devices or for air gas separation units, are particularly equipments expensive and consumers of electrical energy, and thereby significantly the production costs of these units.
The present invention aims to propose an installation combination of at least one metal production unit and at least one air gas separation unit optimizing the synergies between these units, in particular by pooling a compressed air production unit and by direct on-site coupling of production or metal treatment with the sources of air gases offered by the unit of gas separation from the air.
To do this, according to a feature of the invention, the installation combined unit includes a compressed air production unit with at least an outlet connected to the air gas separation unit and to said device of production or treatment for the air supply of these.
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2 Selon une autre caractéristique de l'invention, l'installatian comprend au moins une conduite de fluide reliant la sortie de l'unité de séparation audit dispositif pour la fourniture d'au moins un gaz de l'air, sous forme gazeuse ou liquide, à ce dernier.
La présente invention a également pour objet de proposer une installation combinée du type précité et exploitant également les synergies thermiques entre les deux unités, notamment les capacités frigorifiques offertes par une unité de séparation, en particulier de type cryogénique.
Pour ce faire, selon une caractéristique de l'invention, le dispositif de production de traitement de métal comprend au moins un circuit de refroidissement dont au moins une partie est associée fonctionnellement à
au moins un circuit de fluide de l'unité de séparation cryogénique de gaz de l'air.
L'invention a également pour objet l'optimisation d'une unité de séparation cryogénique disposant d'air comprimé en excès, D'autres caractéristiques et avantages de la présente invention ressortiront de la description suivante de modes de réalisation donnés à titre illustratif mais nullement limitatif, faite en relation avec les dessins annexés, sur lesquels - la figure 1 est une vue schématique d'un mode de réalisation d'une installation combinée selon l'invention regroupant une ligne de production d'acier et une unité de séparation cryogénique de gaz de l'air ; et - la figure 2 est une vue schématique d'un mode de réalisation d'une unité cryogénique de séparation de gaz de l'air convenant à une installation combinée selon l'invention.
Dans la description qui va suivre et sur les dessins, les éléments identiques ou analogues portent les mêmes chiffres de référence, éventuellement indicés.
Dans le mode de réalisation représenté schématiquement sur la figure 1, on reconnaît trois groupes principaux coopérant mutuellement, à
savoir un groupe de production d'air comprimé haute et moyenne pression I, une ligne de production d'acier II et une unité cryogénique de séparation de gaz de l'air III, ici de type cryogénique.
Dans l'exemple représenté, la ligne II comprend un four de fusion d'acier 1, typiquement un four à arc EAF ou un four à tuyères et brûleurs 2 According to another characteristic of the invention, the installation comprises at least one fluid line connecting the outlet of the unit of separation from said device for supplying at least one gas of air, under gaseous or liquid form, to the latter.
Another object of the present invention is to propose a combined installation of the aforementioned type and also exploiting the synergies between the two units, especially the refrigerating capacities offered by a separation unit, in particular of the cryogenic type.
For this purpose, according to one characteristic of the invention, the device of metal processing production comprises at least one circuit of cooling of which at least part is functionally associated with at least one fluid circuit of the cryogenic gas separation unit the air.
Another subject of the invention is the optimization of a unit of cryogenic separation with excess compressed air, Other features and advantages of the present invention will be apparent from the following description of embodiments given by way of illustrative but not limiting, made in connection with the drawings appended on which ones FIG. 1 is a schematic view of an embodiment of a combined installation according to the invention comprising a line of steel production and a cryogenic gas air separation unit; and FIG. 2 is a schematic view of an embodiment a cryogenic unit for separating the gas from the air suitable for combined installation according to the invention.
In the description that follows and on the drawings, the elements identical or similar have the same reference numerals, possibly indexed.
In the embodiment shown schematically on the figure 1, three main groups mutually know a group of production of compressed air high and medium pressure I, a steel production line II and a cryogenic separation unit of air gas III, here of cryogenic type.
In the example shown, line II comprises a melting furnace of steel 1, typically an EAF arc furnace or an oven with nozzles and burners
3 EOF, dont le métal fondu est transféré à un dispositif 2 de traitement ou de mise à nuance de l'acier fondu de type convertisseur, AOD ("Argon oxygen decarburization) ou BOF ("Basic oxygen furnace"), qui est ensuite transféré, via un dispositif de coulée continue 3 et un four de réchauffe en continu 4 à
un train de laminage 5. Le four 1 est alimenté en acier soit directement en provenance d'un dispositif 6 de réduction ou de pré-réduction de minerai de fer, du type haut fourneau ou à réduction directe COREX ou DRI, soit en ferraille par un dispositif de tri de ferrailles 7. L'unité cryogénique de séparation de gaz de l'air III comprend typiquement au moins une double colonne de distillation g, comportant, comme représenté sur la figure 2, une colonne moyenne pression 10 et une colonne basse pression 11 et, avantageusement, une colonne de mixture argon (non représentée), et alimentée en air comprimé, sous une pression d'au moins 4 x 105 Pa, typiquement de 6 à 35 x 105 Pa, par une ligne d'amenée d'air comprimé 12 incorporant un dispositif d'épuration à adsorbant 13. Dans l'exemple représenté, l'unité de séparation comporte au moins une sortie d'oxygène pur 14, une sortie d'azote sensiblement pur 15, une sortie d'argon sensiblement pur 16, une sortie de gaz résiduaire 17 (généralement de l'azote impur) et une sortie additionnelle de fluide cryogénique 18, par exemple de l'azote liquide ou gazeux ou de l'air liquide.
Selon un aspect de l'invention, les groupes II et III sont alimentés en air comprimé par un même groupe de compression commun I
comprenant un train de compresseurs 19 ayant plusieurs sorties, dont au moins certaines d'entre elles sont associées à un groupe de séchage et de déshuilage 20, fournissant au moins de l'air comprimé haute pression (typiquement supérieure à 6 x 105 Pa) à au moins une conduite 21 et avantageusement au moins de l'air comprimé à moyenne pression (entre 3 et 6 x 105 Pa), à une série de conduites 22. La conduite 21 est directement reliée à la conduite 12 tandis que les conduites 22 sont reliées, via un dispositif de réglage et, éventuellement, de détente de pression 23 au four 1, pour l'alimentation de brûleurs ou de tuyères, au dispositif de traitement d'acier fondu 2, pour l'alimentation de tuyères ou de brûleurs, au four de réchauffe 4, pour l'alimentation de brûleurs, et au train de laminage 5, pour la fourniture d°air de vaporisation d'eau de refroidissement, ainsi que, pour la fourniture à l'ensemble de ces dispositifs, d'air sec moyenne pression dit "air ~~3aâG 3 EOF, whose molten metal is transferred to a treatment device 2 or shading of molten steel type converter, AOD ("Argon oxygen decarburization) or BOF ("Basic oxygen furnace"), which is then transferred, via a continuous casting device 3 and a continuous heating furnace 4 to a rolling train 5. The furnace 1 is fed with steel either directly from a device 6 for reducing or pre-reducing ore from iron, blast furnace type or direct reduction COREX or DRI, either in scrap by a scrap sorting device 7. The cryogenic unit of air gas separation III typically comprises at least one double distillation column g, comprising, as shown in FIG. 2, a medium pressure column 10 and a low pressure column 11 and, advantageously, an argon mixture column (not shown), and supplied with compressed air, at a pressure of not less than 4 x 105 Pa, typically from 6 to 35 x 105 Pa, by a compressed air supply line 12 incorporating an adsorbent purification device 13. In the example shown, the separation unit comprises at least one oxygen outlet pure 14, a substantially pure nitrogen outlet 15, an argon outlet substantially pure 16, a waste gas outlet 17 (generally from impure nitrogen) and an additional output of cryogenic fluid 18, by example of liquid or gaseous nitrogen or liquid air.
According to one aspect of the invention, groups II and III are fed compressed air by the same group of common compression I
comprising a compressor train 19 having several outputs, including some of them are associated with a drying and de-oiling 20, providing at least high pressure compressed air (typically greater than 6 x 105 Pa) to at least one pipe 21 and advantageously at least medium pressure compressed air (between 3 and 6 x 105 Pa), to a series of ducts 22. The duct 21 is directly connected to the pipe 12 while the pipes 22 are connected, via a adjusting device and possibly pressure relief 23 in the oven 1, for the supply of burners or nozzles, to the treatment device of molten steel 2, for the supply of nozzles or burners, to the furnace of heating 4, for the supply of burners, and the rolling train 5, for supply of cooling water spray air, as well as that for the supply to all these devices, dry air average pressure said "air ~~ 3aâG
4 instrument" pour la protection ou le gainage d'instruments de contrôle de surveillance de ces dispositifs, par exemple des sondes de température ou des caméras de télévision. De l'air moyenne pression est également adressé
au dispositif de tri 7 pour l'alimentation des buses d'éjection d'air de triage de ce dernier. De l'air moyenne pression et/ou de l'air haute pression est également adressé au dispositif de réduction ou de pré-réduction d'acier 6 pour l'alimentation de tuyères ou de brûleurs de ce dernier et/ou pour la fourniture d'air instrument. De l'air comprimé sec à moyenne pression peut également être fourni, en une sortie 24 du dispositif 23, à un réseau d'air comprimé pour d'autres appareils utilitaires de l'installation ou voisins de cette dernière.
Corrélativement, selon un aspect de l'invention, l'oxygène fourni par le groupe III est adressé au dispositif de réduction ou de pré-réduction 6, pour l'alimentation de brûleurs ou d'injecteurs, au four 1, pour l'alimentation de brûleurs ou de tuyères de post-combustion, au dispositif de traitement d'acier fondu 2, pour l'alimentation de tuyères ou de brûleurs de ce dernier, et au four de réchauffe 4 pour l'alimentation de brûleurs de ce dernier. De même, de l'azote et/ou de l'argon sont adressés au dispositif 1, pour le convoyage de particules carbonées, au dispositif 2, pour y réaliser un bullage, et aux dispositifs 3 à 5, pour leur inertage ou zonage.
On comprendra de la description qui précède que l'essentiel des gaz nécessaires à la mise en oeuvre des groupes II et III est fourni à partir du groupe de compression I qui de fait transforme l'énergie électrique, acheminée par une ligne 25, en énergie pneumatique multi-usages, en permettant ainsi de gagner sur les coûts de production avec un contrat d'énergie électrique avantageux et un groupe de compression largement dimensionné et présentant de ce fait des rendements largement supérieurs aux rendements de groupes de compression individuels pour chaque groupe ou, comme c'est souvent le cas aujourd'hui, pour chacun des dispositifs du groupe II.
Selon un autre aspect de l'invention, on met également à profit des frigories ou des gaz saturables disponibles dans le groupe III pour refroidir des éléments des groupes II et éventuellement I. Comme on le voit sur la figure 1, une canalisation d'amenée d'eau de refroidissement 26 est placée en condition d'échange de chaleur, direct ou indirect, dans un 213J~68 échangeur 27, avec un flux de gaz résiduaire froid ou saturable disponible à
la sortie 17 etlou à la sortie 18 de la double colonne 9 et acheminé par une conduite 170, l'eau ainsi refroidie étant adressée à l'entrée A du circuit d'eau de refroidïssement du four 1, ou à une partie du circuit de refroidissement de 4 instrument "for the protection or sheathing of monitoring of these devices, for example temperature probes or television cameras. Medium pressure air is also addressed to the sorting device 7 for feeding the air ejection nozzles of triage of the last. Medium pressure air and / or high pressure air is also addressed to the steel reduction or pre-reduction device 6 for the supply of tuyeres or burners of the latter and / or for the supply of air instrument. Dry compressed air at medium pressure can also be provided, in an output 24 of the device 23, to an air network tablet for other utilities of the facility or neighbors of the latter.
Correlatively, according to one aspect of the invention, the oxygen supplied Group III is sent to the reduction or pre-reduction device for the supply of burners or injectors, in the oven 1, for supply burners or afterburner nozzles, to the treatment device of molten steel 2, for the supply of nozzles or burners of the latter, and the heating furnace 4 for the supply of burners of the latter. Of same, nitrogen and / or argon are sent to the device 1, for the conveying carbonaceous particles, to the device 2, in order to carry out a bubbling, and devices 3 to 5, for their inerting or zoning.
It will be understood from the foregoing description that most of the gases necessary for the implementation of groups II and III is provided from of the compression group I which in fact transforms the electrical energy, conveyed by a line 25, in multi-purpose pneumatic energy, in thereby saving on production costs with a contract of advantageous electric energy and a compression group widely dimensioned and thus having significantly higher yields to the individual compression group efficiencies for each group or, as is often the case today, for each of the devices of the group II.
According to another aspect of the invention, it is also useful to frigories or saturable gases available in group III for cool elements of groups II and possibly I. As can be seen in FIG. 1, a cooling water supply pipe 26 is placed in a condition of heat exchange, direct or indirect, in a 213J ~ 68 exchanger 27, with a cold or saturable waste gas stream available at the exit 17 and / or at the exit 18 of the double column 9 and conveyed by a pipe 170, the water thus cooled being sent to the inlet A of the circuit water for cooling the furnace 1, or a part of the cooling circuit of
5 ce four 1 intéressant les zones les plus chaudes, à une entrée B d'eau de refroidissement d'au moins un étage du train de compresseurs 19, et/ou à
une entrée C d'eau de refroidissement du dispositif de réduction ou de pré-réduction 6. La synergie entre les groupes II et III peut encore être améliorée en récupérant l'eau chaude ou la vapeur du circuit A de refroidissement à
l'eau du four 1, du circuit C de refroidissement du dispositif 6, et/ou du circuit B de refroidissement du train de compresseurs pour l'adresser au dispositif d'épuration 13 en vue de la régénération de son adsorbant.
L°eau chaude ou la vapeur en sortie des circuits de refroidissement A à C, et/ou l'air comprimé chaud en sortie d'un étage du train de compresseurs 19 peuvent également être mis à profit pour vaporiser un liquide cryogénique disponible en sortie de l'unité de séparation III ou, notamment pour de l'argon non nécessairement produit par l'unité III, fourni par un réservoir, le gaz résultant étant au moins en partie fourni aux dispositifs de l'unité II.
Selon un autre mode de réalisation de l'invention, le train de compresseurs 19, au moins en partie, est du type à entraînement par de la vapeur d'eau sous pression, fournie avantageusement par un réseau de vapeur d'eau E, dont au moins une partie est en relation d'échange thermique avec au moins un des dispositifs 1-6 de l'unité de production de métalll.
De cette façon, il est possible de valoriser l'énergie produite par ledit dispositif (1-6) pour former, de manière classique, de la vapeur d'eau.
A
cette fin, le réseau de vapeur d'eau E est plus particulièrement relié à au moins l'un d'entre le four de fusion de métal 1, le four de réchauffe 4 et le dispositif de réduction ou de pré-réduction de minerais 6.
On a représenté sur la figure 2 un mode de réalisation particulier du groupe III exploitant la disponibilité de larges quantités d'air haute pression en sortie d'un groupe compresseur de forte capacité et utilisé pour produire de l'oxygène et de l'azote à au moins une moyenne pression et de l'air sec et épuré à au moins une moyenne pression pour fourniture au moins ~''~ ~.~3J~68 5 this oven 1 interesting the hottest areas, to a B water inlet cooling of at least one stage of the compressor train 19, and / or a cooling water inlet C of the reduction or pre-reduction device 6. The synergy between groups II and III can still be improved by recovering hot water or steam from cooling circuit A to the water of the furnace 1, the cooling circuit C of the device 6, and / or the circuit B cooling of the compressor train to address the device 13 for the regeneration of its adsorbent.
Hot water or steam at the outlet of cooling A to C, and / or the hot compressed air leaving a stage of the compressor train 19 can also be used to vaporize a cryogenic liquid available at the outlet of the separation unit III or, in particular for argon not necessarily produced by unit III, provided by a reservoir, the resulting gas being at least partly supplied to the devices of unit II.
According to another embodiment of the invention, the train of compressors 19, at least in part, is of the drive type with water vapor under pressure, advantageously provided by a network of water vapor E, at least part of which is in exchange relation with at least one of the devices 1-6 of the production unit of métalll.
In this way, it is possible to value the energy produced by said device (1-6) for forming, in a conventional manner, water vapor.
AT
For this purpose, the water vapor network E is more particularly connected to minus one of the metal melting furnace 1, the heating furnace 4 and the device for reducing or pre-reducing minerals 6.
FIG. 2 shows a particular embodiment Group III exploiting the availability of large amounts of high air pressure output from a compressor group of high capacity and used to produce oxygen and nitrogen at least medium pressure and dry and purified air at least medium pressure for supply at least ~ '~ ~ ~. ~ 3J ~ 68
6 aux différents dispositifs du groupe II. Sur cette figure, on reconnaït la ligne d'amenée d'air comprimé haute pression 12 comprenant, en amont du dispositif d'épuration 13, un groupe frigorifique 28, du type mécanique ou à
absorption, l'air refroidi et épuré étant sur-comprimé par un surpresseur 29 entraîné par une turbine de détente 30, dite turbine Claude, détendant une partie de l'air surpressé et refroidi dans une première ligne d'échange 31 pour son introduction en cuve de la colonne moyenne pression 10, une partie de l'air surpressé et refroidi étant adressée en passant par une deuxième ligne d'échange froide 32 et une vanne de détente à un niveau intermédiaire de la colonne moyenne pression, et, après sous-refroidissement, à un niveau supérieur de la colonne basse pression 11.
Darïs ce mode de réalisation, de l'oxygène liquide est extrait, en 33, en cuve de la colonne moyenne pression 11, de l'azote gazeux est extrait, en 36, en tête de la colonne moyenne pression 10, et de l'azote liquide est extrait en tête de la colonne moyenne pression 11. Selon un aspect de l'invention, de l'air détendu, typiquement à une pression entre 5 et 7 x 105 Pa, en sortie de ia turbine 30 est prélevé et adressé, par une ligne 34 traversant les lignes d'échange 32 et 31, au dispositif de distribution 23 ou directement à certains des dispositifs du groupe II. La détente de ce supplément d'air non introduit dans la double colonne 9 permet une production de froid supplémentaire qui est utilisé pour obtenir une production plus importante des liquides cryogéniques dans la double colonne 9 et ce, avec une énergie spécifique notablement meilleure en raison de la fourniture d'air comprimé par le groupe compresseur I de grande capacité. De ce fait, en sus des fournitures de gaz aux dispositifs de l'unité II, l'unité cryogénique III peut fournir, comme figuré par le réseau E sur la figure 1, au moins une partie de ces fluides à
d'autres sites utilisateurs, par canalisations, après vaporisation, ou sous forme de vrac. En variante, comme également représenté sur la figure 2, de l'air surpressé peut également être dérivé directement de la ligne reliant le surpresseur 29 à la turbine de détente 30, en amont de la ligne d'échange 31, pour la fourniture, par une ligne 35, au dispositif de distribution 23 ou directement à au moins certains des dispositifs du groupe II.
L'installation selon l'invention, outre la diminution des coüts énergétiques, d'investissement et d'exploitation permet d'optimiser la disposition au sein de l'unité de production de métaux, de chacun desdits ''~ 213568 6 to the different devices of group II. In this figure, we recognize the line supplying high pressure compressed air 12 comprising, upstream of the purification device 13, a refrigerating unit 28, of the mechanical type or absorption, the cooled and purified air being over-compressed by a booster 29 driven by an expansion turbine 30, called Claude turbine, relaxing a part of the compressed air cooled in a first exchange line 31 for its introduction into the vat of the medium pressure column 10, a part of the supercharged and cooled air being addressed through a second cold exchange line 32 and a one-level expansion valve intermediate of the medium-pressure column and, after cooling at a higher level of the low pressure column 11.
In this embodiment, liquid oxygen is extracted, at 33, in the tank of the medium pressure column 11, nitrogen gas is extracted, at 36, head of the medium pressure column 10, and liquid nitrogen is extracted in head of the medium-pressure column 11. According to one aspect of the invention, air relaxed, typically at a pressure between 5 and 7 x 105 Pa, output of the turbine 30 is taken and addressed by a line 34 crossing the lines 32 and 31, to the distribution device 23 or directly to certain Group II devices. The relaxation of this air supplement not introduced in double column 9 allows extra cold production which is used to obtain a larger production of liquids cryogenic in the double column 9 and with a specific energy significantly better because of the supply of compressed air by the I compressor group of large capacity. As a result, in addition to the supplies gas to the devices in unit II, the cryogenic unit III can provide, as represented by the network E in FIG. 1, at least a portion of these fluids other user sites, by pipeline, after spraying, or under bulk form. Alternatively, as also shown in FIG. 2, supercharged air can also be derived directly from the line connecting the booster 29 to the expansion turbine 30, upstream of the exchange line 31, for the supply, by a line 35, to the dispensing device 23 or directly to at least some of the devices of group II.
The installation according to the invention, in addition to reducing the costs energy efficiency, investment and exploitation helps to optimize disposal within the metal production unit, of each of those '' ~ 213568
7 groupes I, II et III, ce de sorte à réduire la surface d'occupation aux sols et de diminuer les nuisances, notamment le niveau sonore global, de l'installation. En effet, l'installation selon l'invention, autorise la localisation du groupe I, généralement bruyant, en un seul et unique endroit choisi du site.
Quoique la présente invention ait été décrite en relation avec des modes de réalisation particuliers, elle ne s'en trouve pas limitée mais est au contraire susceptible de modifications et de variantes qui apparaïtront à
l'homme de l'art. Notamment, l'intégration peut être réalisée de façon similaire, alternativement ou additionnellement, avec une unité de séparation de gaz de l'air du type à adsorption ou à perméation, produisant dans ce cas de l'oxygène sensiblement pur et/ou de I°azote sensiblement pur, en place et lieu d'une unité cryogénique telle que 9 ou en parallèle à
cette dernière, les deux unités de séparation étant dans ce dernier cas alimentées par la même unité I, ainsi qu'avec des unités de production de métaux non ferreux, notamment le cuivre, le nickel, le zinc ou le plomb.
De même, d'autres types de dispositifs de production ou de traitement de métal (1-6) peuvent être mis en oeuvre, tels des fours-poches, des unités de dégazage, de traitement de surfaces, de traitement de déphosphatation ou de désulfuration. 7 groups I, II and III in order to reduce the area of occupancy and to reduce the nuisance, in particular the overall noise level, of installation. Indeed, the installation according to the invention allows the location group I, usually noisy, in one and only place chosen from the site.
Although the present invention has been described in connection with particular embodiments, it is not limited but is on the contrary, susceptible of modifications and variants which will appear the skilled person. In particular, integration can be achieved in a similar, alternatively or additionally, with a unit of separation of adsorption or permeation type gas from the air, producing in this case substantially pure oxygen and / or substantially nitrogen pure, in place and place of a cryogenic unit such as 9 or in parallel to the latter, the two separation units being in the latter case supplied by the same unit I, as well as with production units of non-ferrous metals, including copper, nickel, zinc or lead.
Similarly, other types of production devices or metal treatment (1-6) can be implemented, such as pocket furnaces, degassing units, surface treatment units, dephosphatation or desulfurization.
Claims (54)
- au moins un dispositif de traitement de métal ayant au moins une ligne d'amenée pour recevoir un gaz;
- au moins une unité de séparation de gaz de l'air ayant au moins une ligne d'amenée d'air et au moins une sortie de gaz;
- une unité de production d'air comprimé ayant au moins une première et une seconde sortie d'air comprimé, ladite unité de production d'air comprimé comprenant un même groupe de compression commun comprenant un train de compresseurs;
- un premier dispositif pour l'alimentation en air reliant ladite première sortie d'air comprimé à la ligne d'amenée d'air dudit dispositif de traitement de métal pour fournir ledit dispositif de traitement de métal en air comprimé à partir de ladite unité de production d'air comprimé; et - un second dispositif pour l'alimentation en air reliant ladite seconde sortie d'air comprimé à
l'unité de séparation de gaz de l'air pour fournir ladite unité de séparation de gaz de l'air en air comprimé à partir de ladite unité
de production d'air comprimé. 1. A combined installation comprising:
at least one metal treatment device having at least one supply line for receiving a gas;
- at least one gas separation unit the air having at least one air supply line and at least one gas outlet;
- a compressed air production unit having at least less a first and a second air outlet compressed, said air production unit tablet comprising the same group of common compression comprising a train of compressors;
a first device for feeding air connecting said first air outlet compressed at the air supply line of said metal processing device to provide said air metal treatment device compressed from said production unit compressed air; and a second device for supplying air connecting said second compressed air outlet to the air gas separation unit for provide said gas separation unit air in compressed air from said unit of compressed air production.
par une vapeur d'eau. 9. Installation according to claim 1, characterized in that the air generating unit tablet includes a compressor train, and at least part of the compressor train is driven by a powered drive device by a water vapor.
de séparation de gaz de l'air pour la fourniture d'au moins un gaz séparé de l'air jusqu'au moins une unité de l'usine, laquelle comprend la fourniture et l'opération d' au moins un train de compresseurs d'air pour fournir de façon séparée l'air sous pression audit premier dispositif de traitement de métal et à ladite unité de séparation de gaz de l'air par le moyen de différentes sorties dans le compresseur d'air, ledit train de compresseurs d'air comprenant un même groupe de compression commun comprenant un train de compresseurs. 20. A method for the exploitation of a metal processing plant comprising at minus a first metal processing device for the treatment of at least one metal during the use of an airflow, and at least one unit air gas separation for supply at least one gas separated from the air until at least one unit of the plant, which includes the supply and the operation of at least one compressor train of air to separately supply the air under pressure to said first treatment device of metal and said gas separation unit air by means of different exits in the air compressor, said air compressor train including the same common compression group comprising a compressor train.
un premier dispositif de traitement de métal fourni sous la pression de l'air à partir d'un train de compresseurs d'air. 22. The method of claim 20 characterized in that said separated gas is supplied to a first metal processing device provided under the pressure of the air from a train of air compressors.
- au moins un dispositif de traitement de métal ayant au moins une ligne d'amenée de gaz;
- au moins une unité de séparation de gaz de l'air ayant au moins une ligne d'amenée d'air et au moins une de sortie de gaz;
- une unité de production d'air comprimé ayant au moins une sortie d'air comprimé;
- un premier dispositif pour l'alimentation en air reliant ladite sortie d'air comprimé à la ligne d'amenée de gaz dudit dispositif de traitement de métal, pour fournir un premier flux d'air comprimé audit dispositif de traitement de métal; et - un second dispositif pour l'alimentation en air reliant ladite sortie d'air comprimé pour fournir un second flux d'air comprimé à l'unité
de séparation de gaz de l'air, le second dispositif pour l'alimentation en air étant relié à au moins un moyen de compression pour surcomprimer le second flux d'air comprimé, ledit second flux d'air surcomprimé étant divisé en au moins deux jets d'air séparés. 39. A combined installation comprising:
at least one metal treatment device having at least one gas supply line;
- at least one gas separation unit the air having at least one air supply line and at least one gas outlet;
- a compressed air production unit having at least less an outlet of compressed air;
a first device for feeding air connecting said compressed air outlet to the gas supply line of said device for metal processing, to provide a first compressed air flow to said device metal treatment; and a second device for supplying air connecting said compressed air outlet to provide a second flow of compressed air to the unit separation of gas from the air, the second device for the air supply being connected to at least one compression means for overcompress the second flow of compressed air, said second supercharged airflow being divided into at least two separate air jets.
- au moins une unité de transformation de matériel brut ayant au moins une ligne d'amenée pour recevoir un gaz;
- au moins une unité de séparation de gaz de l'air ayant au moins une ligne d'amenée de l'air et au moins une de sortie de gaz;
une unité de production d'air comprimé ayant une première et une seconde sortie d'air comprimé, ladite unité de production d'air comprimé comprenant un même groupe de compression commun comprenant un train de compresseurs;
- un premier dispositif pour l'alimentation en air reliant la première sortie d'air comprimé à
la ligne d'amenée d'air de ladite unité de transformation pour fournir ladite unité de transformation en air comprimé à partir de ladite unité de production; et - un second dispositif pour l'alimentation en air reliant ladite seconde sortie d'air comprimé à
l'unité de séparation de gaz de l'air pour fournir ladite unité de séparation de gaz de l'air en air comprimé à partir de ladite unité
de production. 48. A combined installation comprising:
- at least one processing unit of raw material having at least one supply line to receive a gas;
- at least one gas separation unit the air having at least one supply line of air and at least one gas outlet;
a compressed air production unit having a first and a second air outlet compressed, said air production unit tablet comprising the same group of common compression comprising a train of compressors;
a first device for feeding air connecting the first compressed air outlet to the air supply line of said unit of transformation to provide said unit of conversion to compressed air from said production unit; and a second device for supplying air connecting said second compressed air outlet to the air gas separation unit for provide said gas separation unit air in compressed air from said unit of production.
- au moins une unité de traitement de matériel brut ayant au moins une ligne d'amenée de gaz;
- au moins une unité de séparation de gaz de l'air ayant au moins une ligne d'amenée de l'air et au moins une sortie de gaz;
- une unité de production d'air comprimé ayant au moins une sortie d'air comprimé;
- un premier dispositif pour l'alimentation en air reliant ladite sortie d'air comprimé à la ligne d'amenée d'air de ladite unité de traitement de métal pour fournir un premier flux d'air comprimé à ladite unité de traitement de métal;
-un second dispositif pour l'alimentation en air reliant ladite sortie d'air comprimé pour fournir un second flux d'air comprimé à l'unité
de séparation de gaz de l'air, ledit second dispositif pour l'alimentation en air étant relié à au moins un moyen de compression pour surcomprimer le second flux d'air comprimé, ledit second flux d'air surcomprimé étant divisé en au moins deux jets d'air séparés. 51. A combined installation comprising:
- at least one hardware processing unit crude having at least one gas supply line;
- at least one gas separation unit the air having at least one supply line of air and at least one gas outlet;
- a compressed air production unit having at least less an outlet of compressed air;
a first device for feeding air connecting said compressed air outlet to the supply line of said unit of metal processing to provide a first compressed air flow to said unit of metal treatment;
a second device for supplying air connecting said compressed air outlet to provide a second flow of compressed air to the unit of separation of gas from the air, said second device for the air supply being connected to at least one compression means for overcompress the second flow of compressed air, said second supercharged airflow being divided into at least two separate air jets.
l'unité de transformation. 52. A method for the exploitation of a material treatment plant including at minus one raw material processing unit using at least one air flow, and at least one air gas separation unit to provide the minus one gas separated from the air to at least one unit of transformation in the plant, the method comprising the supply and operation of at least one train of compressors to provide a first airflow under pressure to said processing unit and a second flow of air to said separation unit of gas supply, supplying and operating at least one means of compression to overcompress the second air flow, and supply all of said separate gases to the processing unit.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9313521 | 1993-11-12 | ||
| FR9313521A FR2712383B1 (en) | 1993-11-12 | 1993-11-12 | Combined installation of a metal production unit and an air separation unit. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2135568A1 CA2135568A1 (en) | 1995-05-13 |
| CA2135568C true CA2135568C (en) | 2005-10-11 |
Family
ID=9452800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002135568A Expired - Fee Related CA2135568C (en) | 1993-11-12 | 1994-11-10 | Combined installation for the production of metal and the separation of gas from air |
Country Status (11)
| Country | Link |
|---|---|
| US (2) | US5538534A (en) |
| EP (1) | EP0653599B1 (en) |
| JP (1) | JPH07239193A (en) |
| KR (1) | KR100332078B1 (en) |
| CN (1) | CN1080866C (en) |
| AU (1) | AU685164B2 (en) |
| CA (1) | CA2135568C (en) |
| DE (1) | DE69406895T2 (en) |
| ES (1) | ES2109639T3 (en) |
| FR (1) | FR2712383B1 (en) |
| ZA (1) | ZA948834B (en) |
Families Citing this family (28)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5582029A (en) * | 1995-10-04 | 1996-12-10 | Air Products And Chemicals, Inc. | Use of nitrogen from an air separation plant in carbon dioxide removal from a feed gas to a further process |
| FR2745821B1 (en) * | 1996-03-11 | 1998-04-30 | Air Liquide | METHOD FOR CONDUCTING AN INSTALLATION COMPRISING A METAL PROCESSING UNIT AND A GAS PROCESSING UNIT |
| GB9607792D0 (en) * | 1996-04-15 | 1996-06-19 | Boc Group Plc | Air separation apparatus |
| GB9609099D0 (en) * | 1996-05-01 | 1996-07-03 | Boc Group Plc | Oxygen steelmaking |
| FR2753638B1 (en) * | 1996-09-25 | 1998-10-30 | PROCESS FOR SUPPLYING A GAS CONSUMER UNIT | |
| FR2763664B1 (en) * | 1997-03-04 | 1999-06-18 | Air Liquide | METHOD FOR SUPPLYING A UNIT THAT CONSUMES A GAS AT SEVERAL PRESSURES |
| FR2774308B1 (en) * | 1998-02-05 | 2000-03-03 | Air Liquide | COMBINED PROCESS AND PLANT FOR PRODUCING COMPRESSED AIR AND AT LEAST ONE AIR GAS |
| FR2782154B1 (en) * | 1998-08-06 | 2000-09-08 | Air Liquide | COMBINED INSTALLATION OF AN AIR FLUID PRODUCTION APPARATUS AND A UNIT IN WHICH A CHEMICAL REACTION OCCURS AND METHOD FOR IMPLEMENTING IT |
| US6045602A (en) * | 1998-10-28 | 2000-04-04 | Praxair Technology, Inc. | Method for integrating a blast furnace and a direct reduction reactor using cryogenic rectification |
| FR2790483A1 (en) * | 1999-03-03 | 2000-09-08 | Air Liquide | Drying of compressed air especially for metallurgical application in a metallurgical process for the production of iron, steel, pig iron or ferro-alloys involves adsorption of water vapor on adsorber, e.g. activated alumina |
| US6279344B1 (en) | 2000-06-01 | 2001-08-28 | Praxair Technology, Inc. | Cryogenic air separation system for producing oxygen |
| FR2814178B1 (en) * | 2000-09-18 | 2002-10-18 | Air Liquide | SUPPLY OF OXYGEN-ENRICHED AIR TO A NON-FERROUS METAL PRODUCTION UNIT |
| FR2828729B1 (en) * | 2001-08-14 | 2003-10-31 | Air Liquide | HIGH PRESSURE OXYGEN PRODUCTION PLANT BY AIR DISTILLATION |
| FR2862004B3 (en) * | 2003-11-10 | 2005-12-23 | Air Liquide | METHOD AND INSTALLATION FOR ENRICHING A GASEOUS FLOW IN ONE OF ITS CONSTITUENTS |
| FR2862128B1 (en) * | 2003-11-10 | 2006-01-06 | Air Liquide | PROCESS AND INSTALLATION FOR SUPPLYING HIGH-PURITY OXYGEN BY CRYOGENIC AIR DISTILLATION |
| FR2872262B1 (en) * | 2004-06-29 | 2010-11-26 | Air Liquide | METHOD AND INSTALLATION FOR PROVIDING SUPPORT OF A PRESSURIZED GAS |
| FR2898134B1 (en) * | 2006-03-03 | 2008-04-11 | Air Liquide | METHOD FOR INTEGRATING A HIGH-FURNACE AND A GAS SEPARATION UNIT OF THE AIR |
| US8287215B2 (en) | 2006-11-28 | 2012-10-16 | Minute Key Inc. | Fully automatic key duplicating machine with automatic key model identification system |
| US20130331976A1 (en) | 2010-06-03 | 2013-12-12 | Minute Key Inc. | Key duplicating system |
| US9556649B1 (en) | 2010-07-15 | 2017-01-31 | The Hillman Group, Inc. | Key identification system |
| DE102011112909A1 (en) | 2011-09-08 | 2013-03-14 | Linde Aktiengesellschaft | Process and apparatus for recovering steel |
| US9506272B2 (en) | 2013-08-16 | 2016-11-29 | The Hillman Group, Inc. | Two-piece key assembly |
| US10124420B2 (en) | 2016-02-08 | 2018-11-13 | The Hillman Group, Inc. | Key duplication machine having user-based functionality |
| DE102016107468B9 (en) * | 2016-04-22 | 2017-12-21 | Fritz Winter Eisengiesserei Gmbh & Co. Kg | Method and system for using a target gas provided by a gas separation device |
| US10406607B2 (en) | 2016-09-13 | 2019-09-10 | The Hillman Group, Inc. | Key duplication machine having pivoting clamp |
| US10737335B2 (en) | 2017-03-17 | 2020-08-11 | The Hillman Group, Inc. | Key duplication system with key blank orientation detection features |
| EP3771872A1 (en) * | 2019-08-02 | 2021-02-03 | Linde GmbH | Method and system for providing a natural gas product |
| CN113154796B (en) * | 2021-03-23 | 2022-12-09 | 金川集团股份有限公司 | Variable multi-cycle oxygen-nitrogen cold energy utilization device and method for recycling oxygen-nitrogen resources |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1445973A (en) | 1919-02-04 | 1923-02-20 | Air Reduction | Oxygenated blast for metallurgical furnaces |
| US2079019A (en) | 1934-05-17 | 1937-05-04 | Union Carbide & Carbon Corp | Process for enriching blower blast with oxygen |
| US3304074A (en) | 1962-10-31 | 1967-02-14 | United Aircraft Corp | Blast furnace supply system |
| US3241327A (en) * | 1963-12-18 | 1966-03-22 | Fleur Corp | Waste heat recovery in air fractionation |
| DE3114842A1 (en) * | 1981-04-11 | 1982-10-28 | Mannesmann AG, 4000 Düsseldorf | Process for generating the gases O2, N2 and Ar, required in metallurgical works, by air separation |
| JPS61139609A (en) | 1984-12-13 | 1986-06-26 | Kawasaki Steel Corp | Oxygen enriching method of industrial furnace |
| GB8820582D0 (en) * | 1988-08-31 | 1988-09-28 | Boc Group Plc | Air separation |
| GB8824216D0 (en) * | 1988-10-15 | 1988-11-23 | Boc Group Plc | Air separation |
| FR2677667A1 (en) | 1991-06-12 | 1992-12-18 | Grenier Maurice | METHOD FOR SUPPLYING AN OXYGEN-ENRICHED AIR STOVE, AND CORRESPONDING IRON ORE REDUCTION INSTALLATION. |
| FR2681416B1 (en) * | 1991-09-13 | 1993-11-19 | Air Liquide | METHOD FOR COOLING A GAS IN AN AIR GAS OPERATING INSTALLATION, AND INSTALLATION. |
| GB2266344B (en) * | 1992-04-22 | 1995-11-22 | Boc Group Plc | Air separation and power generation |
-
1993
- 1993-11-12 FR FR9313521A patent/FR2712383B1/en not_active Expired - Fee Related
-
1994
- 1994-10-27 EP EP94402427A patent/EP0653599B1/en not_active Revoked
- 1994-10-27 DE DE69406895T patent/DE69406895T2/en not_active Revoked
- 1994-10-27 ES ES94402427T patent/ES2109639T3/en not_active Expired - Lifetime
- 1994-11-08 ZA ZA948834A patent/ZA948834B/en unknown
- 1994-11-08 JP JP6273451A patent/JPH07239193A/en active Pending
- 1994-11-09 AU AU77708/94A patent/AU685164B2/en not_active Ceased
- 1994-11-10 CA CA002135568A patent/CA2135568C/en not_active Expired - Fee Related
- 1994-11-11 CN CN94117933A patent/CN1080866C/en not_active Expired - Fee Related
- 1994-11-11 KR KR1019940029556A patent/KR100332078B1/en not_active IP Right Cessation
- 1994-11-14 US US08/340,368 patent/US5538534A/en not_active Ceased
-
1998
- 1998-07-21 US US09/119,629 patent/USRE37014E1/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| EP0653599B1 (en) | 1997-11-19 |
| CA2135568A1 (en) | 1995-05-13 |
| DE69406895T2 (en) | 1998-04-30 |
| DE69406895D1 (en) | 1998-01-02 |
| ZA948834B (en) | 1995-07-13 |
| ES2109639T3 (en) | 1998-01-16 |
| CN1080866C (en) | 2002-03-13 |
| USRE37014E1 (en) | 2001-01-16 |
| KR950013628A (en) | 1995-06-15 |
| CN1105752A (en) | 1995-07-26 |
| FR2712383A1 (en) | 1995-05-19 |
| US5538534A (en) | 1996-07-23 |
| JPH07239193A (en) | 1995-09-12 |
| KR100332078B1 (en) | 2002-11-27 |
| EP0653599A1 (en) | 1995-05-17 |
| AU685164B2 (en) | 1998-01-15 |
| AU7770894A (en) | 1995-05-18 |
| FR2712383B1 (en) | 1995-12-22 |
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| EEER | Examination request | ||
| MKLA | Lapsed |